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sigma

[ sig-muh ]

noun

  1. the 18th letter of the Greek alphabet: Σ, σ, ς.
  2. the consonant sound represented by this letter.


sigma

/ ˈɪɡə /

noun

  1. the 18th letter in the Greek alphabet (Σ, σ, or, when final, ς), a consonant, transliterated as S
  2. maths the symbol Σ, indicating summation of the numbers or quantities indicated
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

sigma

  1. A sigma baryon.
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Word History and Origins

Origin of sigma1

First recorded in 1600–10; from Latin, from Greek í
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Word History and Origins

Origin of sigma1

Greek, of Semitic origin; related to Hebrew samekh
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Example Sentences

Examples have not been reviewed.

In scientific jargon that is a five sigma result.

From

"Slay", "sigma" and "skibidi" were chosen as the top three slang words, which OUP said demonstrated the role of social media in influencing children's vocabulary.

From

If you’re lurking in dark corners of the internet, there’s alpha, beta and sigma males.

From

"Our work shows that the dark photon hypothesis is preferred over the standard model hypothesis at a significance of 6.5 sigma, which constitutes evidence for a particle discovery."

From

The discrepancy between the two estimates has a statistical significance of five sigma, meaning there is only about a one-in-a-million chance of it being a statistical fluke.

From

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siglossigma baryon